This is a useful book although it is small. It contains some technical terms for da'wah in English. No doubt all scholars and callers to Islam in English are in much need to something like that to conveys the right message of Islam to all those speak English.
A nice discussion of some important points needed by those callling to Islam
Source: http://www.islamhouse.com/p/1243
The best explanatory translation of the Qur'aan by Muhammad Muhsin Khan and Taqi-ud-Deen Hilaali.
Translators: Muhammad Muhsin Khan - Taqi-ud-Deen Hilaali
Publisher: http://www.qurancomplex.org - King Fahd Complex For Printing The Holy Quran Website
Source: http://www.islamhouse.com/p/1237
Ibn Taymiyyah said: "This (enjoining good and forbidding evil) is a duty that the entire Ummah is obliged to fulfil. It is what the Ulama know as an obligation of collective responsibility, if a group in society undertook to discharge it, the other members of this society are absolved from it. The entire Ummah is commissioned to undertake it, but if a group therein was responsible for discharging it, the rest of society is no longer obliged to undertake it."
Author: Sheikh-ul-Islam ibn Taymiyyah
Reveiwers: Muhammad AbdulRaoof
Translators: Salim Abdullah Marjan
This is an important book talks about a common issue misunderstood but misused by lots of thinkers and orientalists. It is “Why did Prophet Muhammad marry Aisha the young girl?” The author shows the reason behind their discussion. They want to distort the picture of Prophet Muhammad not criticize the marriage of young girl. Also if this kind of marriage was strange, why did not the disbelievers of Quraish use it as a pretext against Muhammad?! The author discusses other topics such as: Europe also allows marrying young girls, the age of consent in most countries worldwide.
Publisher: http://www.rasoulallah.net - Website of Rasoulullah (peace be upon him)
Jesus in Islam: How did the Quran Narrated the stories of the messengers and prophets from Adam to Muhammad, and the Quran had explained in detail the story of Jesus peace up on him.
Author: Ahmed Deedat